I did the Design, Layout & Script for the challenges "Kill Cascade" and "Back Alley Brawl.

Steam's description of the DLC :

"Your combat, stealth and mobility skills will be put to the test as you make your way through 10 distinct maps that feature a variety of challenges. Creatively combine your supernatural abilities, weapons and gadgets to eliminate as many targets as possible, fight off waves of tallboys, guards, weepers and thugs (Back Alley Brawl), or take out targets in a non-stop run of drop assassinations. (Kill Cascade) "